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7422793 |
Non-toxic corrosion-protection rinses and seals based on rare earth elements
Rinsing or sealing solutions comprising a rare earth element and a valence stabilizer for barrier films. The treated films contain a rare earth/valence stabilizer complex. The rare earth element is...
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7407711 |
Non-toxic corrosion-protection conversion coats based on rare earth elements
Conversion coatings comprising a rare earth element and a valence stabilizer combined to form a rare earth/valence stabilizer complex are described for substrate metals. The rare earth element is...
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7402263 |
Tungstate based corrosion inhibitors
A trace amount of a tungstate is disclosed for inhibiting corrosion by nitrogen fertilizer solution, in particular, an ammonium nitrate fertilizer solution, (UAN) in contact with ferrous metal...
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7396802 |
Corrosion inhibitor/metal passivator additive composition from waste refinery streams
The reaction of the disulphided oil, as obtained from the caustic wash of liquefied petroleum gas, with 2,3,8,9,13,14-hexathia-5,6,11,12 -tetraazatricyclo [8.2.1.14,7]tetradeca-4,6,10,12-tetraene...
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7361632 |
Water soluble glass as corrosion protector in dishwashing machines
A zinc-containing, water-soluble glass composition comprising from 41 to 54 mole % of P 2 O 5 , 10 to 30 mole % of alkali oxides, up to 5 mole % of SO 3 and up to 25 mole % of ZnO.
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7341617 |
Corrosion and gas hydrate inhibitors having improved water solubility and increased biodegradability
The invention provides the use of compounds of the formula (1)
where
R 1 , R 2 are each independently C 1 - to C 22 -alkyl, C 2 - to C 22 -alkenyl, C 6 - to C 30 -aryl or C 7 - to C 30...
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7294211 |
Non-toxic corrosion-protection conversion coats based on cobalt
Conversion coatings based on cobalt are described for substrate metals such as aluminum, zinc, magnesium, titanium, cadmium, silver, copper, tin, lead, cobalt, zirconium, beryllium, or indium,...
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7291217 |
Non-toxic corrosion-protection pigments based on rare earth elements
A corrosion-inhibiting pigment comprising a rare earth element and a valence stabilizer combinded to form a rare earth/valence stabilizer complex. The rare earth element is selected from cerium,...
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7264661 |
Particulate metal alloy coating for providing corrosion protection
Coatings containing particulate metal alloy are disclosed. The coatings provide corrosion protection to a substrate, such as a metal substrate. The coatings contain zinc-metal-containing alloy in...
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7204937 |
Metal oxides dispersant composition
This invention relates to metal oxides dispersant compositions comprising (a) certain a metal oxides dispersant, and (b) an oxime. The invention also relates to a process for dispersing metal...
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7195723 |
Colloidal solutions and nanocomposites of electrides and alkalides and methods of use
A colloidal solution and/or nanocomposite having enhanced energy transfer between thermal, electron, phonons, and photons energy states. The composition comprises a synergistic blend of electrides...
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7179403 |
Anti-corrosion solutions for air dehumidification systems
Anti-corrosion solutions useful for air dehumidification processes are disclosed. Phosphonate corrosion inhibiting agents or mixtures thereof can be added to halide solutions of alkali metals,...
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7176168 |
Lubricant containing a synergistic combination of rust inhibitors, antiwear agents, and a phenothiazine antioxidant
The present invention describes an improved lubricant composition comprising a particularly effective combination of components comprising ashless antiwear and rust inhibitor additives with an...
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7135396 |
Method of making a semiconductor structure
Methods of making a semiconductor structure are disclosed. A refractory metal layer containing W, TiW, Ta, or TaN and semiconductor layer are formed on a substrate that contains copper in, for...
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6984340 |
Corrosion inhibiting formulations
The present invention relates to formulations for corrosion-inhibiting, emulsifying, lubricating or as a surfactant in organic hydrocarbon and/or water based system containing an acyl amino acid...
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6953534 |
Engine antifreeze composition
In general this invention relates to an antifreeze composition that can be used in the cooling systems of internal combustion engines, for example, in heavy-duty diesel engines, light duty trucks...
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6894008 |
Method of increasing pH of high-density brines
It has been discovered that carbonate powders and bicarbonate powders are useful to increase the pH and corrosion resistance of high-density brines, such as zinc bromide brines, without...
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6885721 |
Inhibition method of stress corrosion cracking of nuclear steam generator tubes by lanthanum boride
The present invention relates to a method for inhibiting stress corrosion cracking occurring on steam generator tubes in the secondary side of nuclear power plants and an inhibitor therefor. The...
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6811747 |
Corrosion inhibitor
The present invention relates to water treatment chemical formulations, and more particularly to chemical formulations used to treat water containing halogens as a sanitizing agent. The water...
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6777238 |
Dual use corrosion inhibitor and penetrant for anomaly detection in neutron/X radiography
A dual purpose corrosion inhibitor and penetrant composition sensitive to radiography interrogation is provided. The corrosion inhibitor mitigates or eliminates corrosion on the surface of a...
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6773516 |
Process and solution for providing a conversion coating on a metallic surface I
An aqueous acidic solution for forming a rare earth element containing conversion coating on the surface of a metal, said solution being chromate-free and including effective quantities of at least...
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6758282 |
Fire protection pipe and methods of manufacture
A fire protection water sprinkler system, comprising at least one metal tube to carry water within the system, the metal tube having a coating on its interior surface comprising a quaternary...
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6755917 |
Process and solution for providing a conversion coating on a metallic surface II
An aqueous acidic solution for forming a conversion coating on the surface of a metallic material, said solution containing at least one rare earth element (as herein defined) containing species,...
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6749694 |
Conversion coatings including alkaline earth metal fluoride complexes
An aqueous composition for pretreating and depositing a coating on metal substrates is provided. The coating composition includes from about 1,500 to about 55,000 ppm based on the aqueous...
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6740424 |
Surface coated aluminum fine powder and aqueous chromium-free corrosion inhibiting coating composition including the same
A chromium-free corrosion inhibiting coating composition, which does not utilize harmful chromium compounds and can be used for corrosion inhibition of a metal surface, comprising a slurry mixture...
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6733687 |
Hybrid supplemental coolant additive
In general, this invention relates to supplemental coolant additive for use in cooling systems, for example, in diesel engine cooling systems. The supplemental coolant additive includes a C 4 -C 6 ...
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6716370 |
Supramolecular oxo-anion corrosion inhibitors
A corrosion inhibitor is described which includes several supramolecular oxo-anion compositions useful for preventing the propagation of pit corrosion on aluminum and aluminum alloys. The oxo-anion...
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6676856 |
Deacidification treatment of printed cellulosic materials
The invention provides for improvements in composition and methods for the preservation of cellulosic materials through use of solutions comprising organic multi-valent metal carbonates, C 1 -C 4 ...
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6676848 |
Corrosion inhibitors and synergistic inhibitor combinations for the protection of light metals in heat-transfer fluids and engine coolants
Corrosion protection of magnesium and aluminum alloys in engine coolants and heat-exchange fluids is achieved by the use of a select group of aliphatic and aromatic carboxylate acids or the...
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6669786 |
Self-healing non-chromate coatings for aluminum and aluminum alloys
Disclosed are processes and compositions of solutions for chromate-replacement coatings for aluminum and aluminum alloys. A preferred method includes forming a boehmite coating layer that includes...
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6645400 |
Corrosion control utilizing a hydrogen peroxide donor
The present invention describes an innovative means of inhibiting corrosion of metals which experience active-passive transition in contact with an electrolyte. This invention incorporates hydrogen...
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6596197 |
Potassium monofluorophosphate as a corrosion inhibitor
Potassium monofluorophosphate is found to be superior to sodium monofluorophosphate as a corrosion inhibitor for steel reinforcement members in reinforced concrete; conveniently the potassium...
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6572789 |
Corrosion inhibitors for aqueous systems
A method of inhibiting corrosion in aqueous systems comprising adding to the system a composition comprising mono, bis and oligomeric phosphinosuccinic acid adducts and a method of preparing a...
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6556642 |
Inhibition method of the secondary side stress corrosion cracking in nuclear steam generator tubes
The present invention relates to a method for inhibiting stress corrosion cracking occurring on steam generator tubes in the secondary side of nuclear power plants and an inhibitor therefor. The...
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6555600 |
Corrosion inhibiting thermoplastic alloys
Corrosion inhibiting thermoplastic alloys and methods of preparing same for use in fabricating molded articles with long-term corrosion protection. Masterbatches of nylon, polycarbonate, and...
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6527983 |
Method for inhibiting scale formation
A method for inhibiting the formation of scale in waters having a high barium content and low pH comprises the addition of an aqueous solution of a phosphonate of formula: wherein Z=—CHR 1 PO...
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6524403 |
Non-chrome passivation process for zinc and zinc alloys
A non-chrome containing composition and process are disclosed for enhancing the corrosion resistance of zinc or zinc alloy surfaces. The composition comprises a source of titanium ions or...
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6508951 |
Low P type coolant composition
A glycol-based coolant composition which provides an excellent metal corrosion inhibition despite its low phosphorus content is disclosed. The glycol-based coolant composition contains: (A)...
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6503305 |
Non-toxic corrosion inhibitor
A non-toxic chemical composition inhibits corrosion in metal substrates. The composition contains a Phosphorus compound, comprising an acid and a metal selected from the group consisting of an...
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6475358 |
Method for providing a protective coating for carbonaceous components of an electrolysis cell
A method of treating a carbonaceous cell component of an electrolyte cell for the production of aluminum, to impart protection against deterioration during operation of the cell. A liquid...
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6464901 |
Halogen resistant copper corrosion inhibitors
Non-halogen substituted, nitrogen containing, aromatic compounds are disclosed which are effective copper corrosion inhibitors in aqueous systems being treated with a halogen biocide. The materials...
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6461415 |
High temperature amorphous composition based on aluminum phosphate
A composition providing thermal, corrosion, and oxidation protection at high temperatures is based on a synthetic aluminum phosphate, in which the molar content of aluminum is greater than...
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6447594 |
Strontium chromate corrosion inhibitor pigment with reduced solubility
A process for producing a strontium chromate corrosion inhibitor includes the steps of providing an aqueous slurry containing dispersed particulate strontium chromate, adding to the slurry a...
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6399040 |
Process for generating recoverable sulfur containing compounds from a spent acid stream
This invention relates to a process for generating recoverable sulfur containing compounds, e.g., sulfur dioxide, from a spent sulfuric acid stream by combusting and/or thermally decomposing the...
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6398984 |
Corrosion inhibitors and synergistic inhibitor combinations for the protection of light metals in heat-transfer fluids and engine coolants
Corrosion protection of magnesium and aluminum alloys in engine coolants and heat-exchange fluids is achieved by the use of a select group of aliphatic and aromatic carboxylate acids or the...
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6383271 |
Anti-corrosive coating including a filler with a hollow cellular structure
An anti-corrosive coating composition suitable for providing corrosion protection for a sheet metal substrate includes from 20 to 97 wt. % of a filler dispersed in a polymeric base or matrix...
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6372918 |
Compound for inhibiting corrosion
The invention relates to compounds of the formula 1 R 1 —O—(A—O) x —(CH 2 ) y —R 2 (1) in which R 1 is branched or straight-chain C 4 -C 30 -alkyl, C 4 -C 30 -alkenyl or C 4 -C 30...
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6350474 |
Phosphate composition and its utilization
The invention deals with phosphate water solution with cold solidification capacity. Phosphate composition containing iron oxide solution in acid, water, advantages from the following properties;...
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6340438 |
Corrosion inhibiting admixture for concrete
A corrosion inhibiting admixture for concrete is disclosed comprising a combination of organic (amines) and inorganic (nitrites) fractions that provide a synergistic effect when present at a...
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6339168 |
Composition comprising stabilized phosphorus compounds
A composition comprising at least a phosphorus compound and a stabilizer compound having one of the formulae I to IV can be used for increasing the shelf life or reducing metal corrosion.
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